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Patent US7438245 - Milling and classifying apparatus ...

Disclosed is a milling and classifying apparatus, adapted to produce toner fine particles, comprising a collision mill, and an air classifier, wherein the collision mill comprises a jet nozzle room, a path, a collision plate, and a collision member mounted to a support of the collision plate at downstream of the collision plate, the air ...

Patent US3693791 - Method of, and apparatus for, spiral ...

A multi-stage spiral air classification method and apparatus for dividing into at least three fractions solid particles suspended in a gaseous carrier, in which a spiral flow of additional carrier gas is introduced to the flow of the suspension at …

Brevetto US20100025502 - Jet for Use in a Jet Mill ...

high capacity of toner powder grinding and classifying …

Patent US7438245 Milling and classifying apparatus, collision . Disclosed is a milling and classifying apparatus, adapted to produce toner suction of the separator core to control swirl stream generated within the classification …